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HL: Fachverband Halbleiterphysik
HL 89: Quantum Dots and Wires: Lasing
HL 89.6: Talk
Thursday, March 10, 2016, 17:30–17:45, H13
Ultrafast optical pulse modulation in hybrid silicon nitride/colloidal quantum dot systems — •Christian Ulbrich1, Bastian Herzog1, Pieter Geiregat2,3, Yunpeng Zhu3, Yücel Kaptan1, Mirco Kolarczik1, Zeger Hens2, Dries van Thourhout3, Ulrike Woggon1, and Nina Owschimikow1 — 1Institut für Optik und Atomare Physik, Technische Univeristät Berlin, Germany — 2Physics and Chemistry of Nanostructures Group, Faculty of Science, Department of Inorganic and Physical Chemistry, Ghent Univeristy, Belgium — 3Photonics Research Group, Faculty of Engineering and Architecture, Department of Information Technology, Ghent Univeristy, Belgium
To explore the prospects for the integration of quantum dots with silicon photonics, we investigate the effect of colloidal PbS quantum dots coated onto SiN waveguides on the optical properties of the waveguides. The quantum dots are coupled to the waveguide mode via the evanescent field. In heterodyne detected pump-probe experiments we study (cross)-amplitude and -phase modulation of a probe pulse induced by optical pumping of intra- and interband transitions of the quantum dots.